A clean sharp edge cuts as well or better than a burred edge. It is physically impossible for a bur on a hole edge, like seen on these filters, to cut through the adbv by itself. Try pressing on a burred hole like these with a finger, does the finger get cut off? Cut a piece of cheese with a knife, doesn't it require the blade to pass through all of the cheese to cut through it? It seems pretty obvious a small bur does not slice through much of anything. In this style adbv shown in these two recent posts, the valves haven't been damaged at all. The Bosch I cut wasn't damaged at all and has sharp holes with small burs too. Want to see sharp inlet holes right on the adbv sealing surface? Look at Fram's design.
WM has the TG4386 for $4.26 right now BTW, I ordered a couple to alternate with the Toyota and Boss, just for playing around.